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[SPECIFICATIONS]
- Brand System Contractor: Grinnell Company (Providence, R.I., U.S.A.)
- Instrument Manufacturer: Auto-Lite (Moto Meter Gauge & Equipment Div.)
- Era: Circa 1940s / 1950s
- System Application: Fire Protection / Dry Pipe Valve Sprinkler Air Line
- Pressure Measurement Range: 0 to 80 PSI (With max limit mark at 250 PSI)
- Certifications Stamped: FM (Factory Mutual Shield)
- Casing Material: Heavy Industrial Metal Casing with Cast Brass Bezel Rim
- Fitting Design: Male Threaded NPT Lower Vertical Stem Mount
[CONDITION DETAILS]
- Overall Grade: For Parts / Not Working (Sold As-Is Mechanical Core)
- Calibration Status: Needle rests at ~2 PSI while unhooked; internal Bourdon tube or gear assembly requires calibration.
- Glass Crystal: Front clear face crystal is entirely clean and intact with no scratches or cracks.
- Outer Housing: Preserved in raw, authentic workshop condition with minor surface wear.
- Thread Connections: Bottom mounting threads are clean and straight.
